Incident Score: Analysis & Impact (BAN1773117300)
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Rankiteo Score Impact Analysis
Key Highlights From The Incident Analysis
- Timeline of Banner Capital Bank's Breach and lateral movement inside company's environment.
- Overview of affected data sets, including SSNs and PHI, and why they materially increase incident severity.
- How Rankiteo’s incident engine converts technical details into a normalized incident score.
- How this cyber incident impacts Banner Capital Bank Rankiteo cyber scoring and cyber rating.
- Rankiteo’s MITRE ATT&CK correlation analysis for this incident, with associated confidence level.
Full Incident Analysis Transcript
In this Rankiteo incident briefing, we review the Banner Capital Bank breach identified under incident ID BAN1773117300.
The analysis begins with a detailed overview of Banner Capital Bank's information like the linkedin page: https://www.linkedin.com/company/bannercapitalbank, the number of followers: 75, the industry type: Banking and the number of employees: 238 employees
After the initial compromise, the video explains how Rankiteo's incident engine converts technical details into a normalized incident score. The incident score before the incident was 709 and after the incident was 644 with a difference of -65 which is could be a good indicator of the severity and impact of the incident.
In the next step of the video, we will analyze in more details the incident and the impact it had on Banner Capital Bank and their customers.
On 06 March 2026, Banner Capital Bank disclosed Data Breach issues under the banner "Banner Capital Bank Data Breach Affecting Customer Financial Data".
Banner Capital Bank detected unauthorized access to an employee’s email accounts, revealing that a hacker had compromised the accounts between August 20, 2025, and September 11, 2025.
The disruption is felt across the environment, affecting Employee email accounts, and exposing Names and financial account numbers.
In response, and stakeholders are being briefed through Customer notifications via mail.
The case underscores how Ongoing, with advisories going out to stakeholders covering Notification letters sent to affected customers.
Finally, we try to match the incident with the MITRE ATT&CK framework to see if there is any correlation between the incident and the MITRE ATT&CK framework.
The MITRE ATT&CK framework is a knowledge base of techniques and sub-techniques that are used to describe the tactics and procedures of cyber adversaries. It is a powerful tool for understanding the threat landscape and for developing effective defense strategies.
MITRE ATT&CK® Correlation Analysis
Rankiteo's analysis has identified several MITRE ATT&CK tactics and techniques associated with this incident, each with varying levels of confidence based on available evidence. Under the Initial Access tactic, the analysis identified Phishing: Spearphishing Link (T1566.002) with moderate to high confidence (80%), supported by evidence indicating unauthorized access to an employee’s email accounts and Valid Accounts: Cloud Accounts (T1078.004) with moderate to high confidence (70%), supported by evidence indicating compromised the accounts between August 20, 2025, and September 11, 2025. Under the Credential Access tactic, the analysis identified Email Collection: Remote Email Collection (T1114.002) with moderate to high confidence (80%), supported by evidence indicating unauthorized access to an employee’s email accounts and Steal Web Session Cookie (T1539) with moderate confidence (60%), supported by evidence indicating hacker had compromised the accounts (email). Under the Collection tactic, the analysis identified Email Collection: Remote Email Collection (T1114.002) with high confidence (90%), supported by evidence indicating exposed data may include names and financial account numbers and Data from Information Repositories: Sharepoint (T1213.002) with moderate confidence (50%), supported by evidence indicating employee email accounts (potential SharePoint/OneDrive links). Under the Exfiltration tactic, the analysis identified Exfiltration Over C2 Channel (T1041) with moderate to high confidence (70%), supported by evidence indicating data breach affecting customer financial data and Transfer Data to Cloud Account (T1537) with moderate confidence (60%), supported by evidence indicating unauthorized access to email accounts (cloud-based). Under the Impact tactic, the analysis identified Data Destruction (T1485) with lower confidence (30%), supported by evidence indicating no details on data integrity post-breach and Data Manipulation: Stored Data Manipulation (T1565.001) with lower confidence (40%), supported by evidence indicating financial account numbers exposed (potential tampering risk). These correlations help security teams understand the attack chain and develop appropriate defensive measures based on the observed tactics and techniques.
Sources & References
- Banner Capital Bank Rankiteo Cyber Incident Details: https://www.rankiteo.com/company/bannercapitalbank/incident/BAN1773117300
- Banner Capital Bank CyberSecurity Rating page: https://www.rankiteo.com/company/bannercapitalbank
- Banner Capital Bank Rankiteo Cyber Incident Blog Article: https://blog.rankiteo.com/ban1773117300-banner-capital-bank-breach-march-2026/
- Banner Capital Bank CyberSecurity Score History: https://www.rankiteo.com/company/bannercapitalbank/history
- Banner Capital Bank CyberSecurity Incident Source: https://www.globenewswire.com/news-release/2026/03/08/3251424/0/en/DATA-BREACH-ALERT-Edelson-Lechtzin-LLP-is-Investigating-Claims-on-Behalf-of-Persons-Affected-by-the-Banner-Capital-Bank-Data-Breach.html
- Rankiteo A.I CyberSecurity Rating methodology: https://www.rankiteo.com/Images/rankiteo_algo.pdf
- Rankiteo TPRM Scoring methodology: https://static.rankiteo.com/model/rankiteo_tprm_methodology.pdf